Add support for lerna-based eslint runs

.eslintrc.js

@@ -3,6 +3,7 @@
 module.exports = {
  env: {
  node: 1,
+ mocha: 1,
  },
  parserOptions: {
  ecmaVersion: 2020,

lib/utils.js

@@ -1,14 +1,51 @@
 'use strict';
 
 const getPackages = require('get-monorepo-packages');
-const { dirname, join, relative, sep, normalize, isAbsolute } = require('path');
+const fs = require('fs');
+const {
+ dirname,
+ join,
+ relative,
+ sep,
+ normalize,
+ isAbsolute,
+ resolve,
+} = require('path');
 
 const isSubPath = (parent, path) => {
  const relativePath = relative(parent, path);
  return relativePath.split(sep)[0] !== '..' && !isAbsolute(relativePath);
 };
 
-const packages = getPackages(process.cwd()).map(
+const directoryContainsRootPackageJson = (path) => {
+ const pathToCheck = resolve(path, 'package.json');
+ if (!fs.existsSync(pathToCheck)) return false;
+ const pkg = require(pathToCheck);
+ if (pkg && {}.hasOwnProperty.call(pkg, 'workspaces')) {
+ return true;
+ }
+ return false;
+};
+
+const getRepositoryRoot = (path = process.cwd()) => {
+ let pathForCheck = path;
+
+ if (directoryContainsRootPackageJson(pathForCheck)) {
+ return pathForCheck;
+ }
+
+ while (pathForCheck !== resolve(pathForCheck, '..')) {
+ pathForCheck = resolve(pathForCheck, '..');
+
+ if (directoryContainsRootPackageJson(pathForCheck)) {
+ return pathForCheck;
+ }
+ }
+
+ return path;
+};
+
+const packages = getPackages(getRepositoryRoot()).map(
  ({
  package: { name, dependencies = {}, devDependencies = {} },
  location,
@@ -74,4 +111,10 @@ const getImport = (context, callback) => {
  };
 };
 
-module.exports = { isSubPath, packages, getImport, pathToImport };
+module.exports = {
+ isSubPath,
+ packages,
+ getImport,
+ pathToImport,
+ getRepositoryRoot,
+};

tests/utils/getRepositoryRoot.js

@@ -0,0 +1,29 @@
+'use strict';
+
+const assert = require('assert');
+const path = require('path');
+
+describe('getRepositoryRoot', () => {
+ it('should detect root path from package in monorepository', () => {
+ const pkgPath = path.resolve(
+ __dirname,
+ './mocks/repo-with-workspaces/package/',
+ );
+
+ process.chdir(pkgPath);
+
+ const utils = require('../../lib/utils');
+
+ assert.ok(utils.getRepositoryRoot() === path.resolve(pkgPath, '..'));
+ });
+
+ it('should detect root path from root in monorepository', () => {
+ const pkgPath = path.resolve(__dirname, './mocks/repo-with-workspaces/');
+
+ process.chdir(pkgPath);
+
+ const utils = require('../../lib/utils');
+
+ assert.ok(utils.getRepositoryRoot() === pkgPath);
+ });
+});

tests/utils/mocks/repo-with-workspaces/package.json

@@ -0,0 +1,4 @@
+{
+ "private": true,
+ "workspaces": ["./"]
+}